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regmap: Skip patch application when the cache is not dirty on sync

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On the basis that if we don't actually need to resync the cache then the
patches are probably also already applied.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-01-25 21:06:33 +00:00
parent 22f0d90a34
commit d9db762708
1 changed files with 3 additions and 2 deletions
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5
drivers/base/regmap/regcache.c
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@ -269,6 +269,9 @@ int regcache_sync(struct regmap *map)
name = map->cache_ops->name;
trace_regcache_sync(map->dev, name, "start");
if (!map->cache_dirty)
goto out;
/* Apply any patch first */
for (i = 0; i < map->patch_regs; i++) {
ret = _regmap_write(map, map->patch[i].reg, map->patch[i].def);
@ -279,8 +282,6 @@ int regcache_sync(struct regmap *map)
}
}
if (!map->cache_dirty)
goto out;
if (map->cache_ops->sync) {
ret = map->cache_ops->sync(map);
} else {